Handle symbol literals in closed_world2_test

pkg/compiler/lib/src/compile_time_constants.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.compile_time_constant_evaluator;
 
 import 'common/resolution.dart' show Resolution;
 import 'common/tasks.dart' show CompilerTask, Measurer;
 import 'common.dart';
 import 'compiler.dart' show Compiler;
@@ skipping 568 matching lines @@
           new DartString.concat(accumulator, partStringValue.primitiveValue);
     }
     return new AstConstant(
         context,
         node,
         new ConcatenateConstantExpression(subexpressions),
         constantSystem.createString(accumulator));
   }
 
   AstConstant visitLiteralSymbol(LiteralSymbol node) {
-    ResolutionInterfaceType type = commonElements.symbolType;
+    ResolutionInterfaceType type = commonElements.symbolImplementationType;
     String text = node.slowNameString;
     List<AstConstant> arguments = <AstConstant>[
       new AstConstant(context, node, new StringConstantExpression(text),
           constantSystem.createString(new LiteralDartString(text)))
     ];
-    ConstructorElement constructor = compiler.commonElements.symbolConstructor;
+    ConstructorElement constructor =
+        compiler.commonElements.symbolConstructorTarget;
     AstConstant constant = createConstructorInvocation(
         node, type, constructor, CallStructure.ONE_ARG,
         normalizedArguments: arguments);
     return new AstConstant(
         context, node, new SymbolConstantExpression(text), constant.value);
   }
 
   ConstantValue makeTypeConstant(ResolutionDartType elementType) {
     return constantSystem.createType(compiler.commonElements, elementType);
   }
@@ skipping 862 matching lines @@
   @override
   ConstantExpression getFieldConstant(FieldElement field) {
     return field.constant;
   }
 
   @override
   ConstantExpression getLocalConstant(LocalVariableElement local) {
     return local.constant;
   }
 }